Mold for cement building-walls.



No. 814,154. PATENTED MAR. 6, 1906.

A. MoGAHON. MOLD r011 05mm: BUILDiNG WALLS.

APPLIOATIOI FILED [$3.17. 1905.

Witneasea: Inv bfor. e v EWHMM- UNITED STATES PATENT OFFICE.

Specification of Letters Patent. Application flied March 17,1905. Serial No. 250.680.

Patented March 6, 1906.

To all whom it may concern:

Be it known that I, ALpxANnERMcCAHoN, a citizen of the United States, residing at St. Joseph, in the county of Buchanan and State of Missouri, have invented certain new and useful Improvements in Molds for Cement Building-Walls; and I do declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this s ecification.

. space between the walls.

My invention re ates to core-boxes for molding cement walls for buildings and other structures hollow and without joints for the purpose of obtaining strength, ventilation, and exemption from dampness.

I attain my object in the manner hereinafter set forth and by the mechanism illustrated in the accompanying drawings, in

. which- Figure l is a vertical sectional end view of the spaced walls of a building and a cement roof with the ventilation-space extending to the cone thereof. Fig. 2 is a plan of the walls and ventilation, a core-box, and a flask for forming the cement of said walls. Fig. 3 is a side view of a core-box; Fig. 4, a detail end view of a core-box as set between the walls while the cement is hardening, forming walls at its sides and ribs at its ends, and the flask that forms the outside of the walls ;'and Fig. 5 is a detail of a clamp for holding the flask in position.

Similar letters refer several views.

In the drawings, A represents the ouitside wall, A the inside wall, and B the ventilation- The footing (if the foundation of the walls is preferably built solid; but from a point somewhat below the lower 'oists to the cone of the roof the space extends unobstructed except only by ribs C C for tying the walls together. consists of rafters D D, sheathing D, a layer E of cement, and between the cement and sheathing a layer of taraper F. Said paper F being unattached to tiie sheathing and se arating the cement therefrom revents t e cement being cracked by the sliirinkage and ex ansion of the sheathing.

EH are the sidesof a core-box,and I I the ends thereof.

to similar parts in the The roof' Said box is constructed of any. sultable material. The cement walls are 1 built against sides H H of said, box and ribs C C are formed between ends ,I I, the boxes being spaced apart as desired.

h hare hinges, and i i are hooks.

J J are extensions to ends I I, by which to conveniently grasp and turn ends I I when unhooked.

K is a cross-bar pivoted centrally on'the inside of one of sides H H: INhenthe cement at the sides of the core-box has suflicien tly hardened, ends I I are unhooked by rotating cross-bar K on its pin to a perpendicular, ends I I being then swung on hinges h h toward side H, as shown by dotted line in Fig. 4, and the core-box can be readily lifted to a greater elevation, or it may be taken from between the walls if they are finished; Crossbar K also serves the purpose of preventing ends I I being pressed in by the cement by merely turning it to the position shown b dotted'lines in Fi 3, its ends set against the sides of said endsI I.

A rod H is ada ted to be inserted through holes h h near the tops of the sides of the core-box, its ends extending a flask, thus supporting the flask is constructed of able material, and in building a Wall is used for forming the cement. Preferably it is made about three feet Wide length. L L constitute the sides, and O O the supports. P P are loclcbars, smaller at one end than at the other and adapted to extend over sides L L and provided with holes- 1 1' to receive ins r r, the pins projecting downward sufficiently far on the outside of the.flask to hold it in position. Apertures T T are provided in both outside and inside walls for ventilation. A Wall may be 0011- structed' with a pluralitv of spaces. V V are over the tops of core-box.

and any desired bands of any suitable material extended if lengthwise with the flask to hold it rigid. Designs of any description are carved orburned into these flasks, thus impressing upon the outside of the cement walls ornamental or other designs. 7

What I claim, and desire to secure by Letters Patent, is 1. The combination with a molding-flask, of the sides of a plurality of cement building core-boxes provided with holes, the ends within the edges of said sides, the hinges and hooks on said ends, a bar pivoted centrally on a side of each box, and the rods'engaging with the holes in thesidejs ofsaidfbpxes the] projecting ends ofsa'idjrods serving as supports for the core-boxes through engagement with said flesk substantia-lly as set forth and shownv 2. The combination in st cement building core-box, of sides provided with holes, the ends set within the edges of said sides, the extensions on top the end pieces, the hinges and hooks on said ends, the bar pivotally at tnehed centrally to one of said sides adapted to form lock connection with the ends of the be to prevent cement pressing said ends inward, the rod passing through the holes in the sides its-ends projecting to engage with \supports, substantially as set forth and Withesses:

CHAS. P. EJoxscuc, F. ,W. tlouznoorz. 

